Bale ejector for scrap metal baling presses



March 20, 1945.

G. w. LANGFORD EI'AL 2,371,762

BALE EJECTOR FOR SCRAP METAL BALING PRESSES 2 Sheets-Shee 1 Filed April25, 1941 grwww W UR fimfi NHU H I LEW. W v E .N M? UF ELJ En;

Patented Mar. 20, 1945 UNITED STATES PATENT OFFICE 2,371,762? 1 y BALEEJECTOR Fort sonar METAL BALING i PRESSES I George W. Langford,AlfordfC. Barrows, and .Tolm; g j

V. Haidler,AnnArbor, Mich, assignorstoEc'on omy Baler Company, AnnArbor, M ich.,' a. cor-b poration of Michigan Application April 25', 1941, SerialNo. 390,240 j it 14Claims (cilia-05y i D applicationof GeorgeW. Langford et al., executed The present invention relates to balingpresses and more particularly to horizontal baling presses the ejectorcomprising a structure on which bales are formed. In the preferredarrangement a cam actuated by the compressing platen actuates theejector. The cam is so arranged that as the compressing platen iswithdrawn after'forming a bale, the ejectoris automaticallyiactuateduAccordingly; an object of the present inventi0n-is to provide astructuretfor automatically ejecting scrap metal .bales from the balingmembers in which they are'formed. Anotherobject of the invention is toprovide a structure on which scrap metal bales are formed and mechanismfor moving the structure to lift the formed bales, outjof the balingchamber.

Another objectof the invention is to provide an automatic bale ejectorselectively operable from a partof the baling mechanism. 1 i .Stillanother object of the invention is to provide a bale ejector comprisinga structure on which the bale is formed, ,the structure being pivoted ata point outside of the baling chamber and'being oscillatable by aselectable connection with an operative part of the balingmechanism tolift a bale from th chamber in which it is formed. j. i H These andother objects residing in the arrangement, construction and combinationof the parts will be apparent from the following specification whentaken with the accompanying drawings, in which. i

Fig. 1 is a side view partially in section disclosing the invention, aFig. 2 is a partial perspective. view of one end of the constructiondisclosed in Fig. 1,

Fig. 3 is a partial vertical enlarged section of April' 22, 1941, andfiled oneven date herewith.

As shown particularly in Fig 2, theirame I is l provided with a balingchamber2. i Reciprocable in the chamber .2 -is a compressing platen 3movableby piston rod 4, actuated by; a pistonenot shown, in the cylinder4 shown in Fig. 5. Also disposed in the'chamber 2 j-is a compressingplaten 5 shown particularly in Fig. sand movablein a direction at rightangles to the movement of the platen 3 by:a piston not. shown inatcylinder 6 shown in Fig. '2. i Movable over the baling cham her 2 bysome suitable mechanism isa cover '1 which fits in the. top ofhthe'baling chamber '2,

asshown particularly in Fig. 3. If desired. the

mechanism for closing the cover I. may include a cover supportingcarriage 8,.shownparticularly in Fig. 1 and morefully disclosed in theaforesaid copending application. a y l Disposed in the forward end ofthebaling chamber 2 is anejector 9 providedwith a back plate ill, and afoot II. the foot II are normally disposed inrecesses l2 and I3respectively; shown most clearly in Fig.2, the depthcf therecesses l2and 13 being such thatthegbackplate J0; and foot -lll are flush with theend wall" l4 and theibottom l5 respectively,

p of the chamber 2.- The back plate Hlof the ejecthe structure disclosedin Fig. 1 disclosing details,

ence character I indicates the frame of a bal ing press similar tothatshown in the copending tor, 9 is provided with a pair of spaced ears 20,each having an--elongated slot 2|. A shaft. 22 projects; throughtheislots 2| and is supported by bearingmembers 23 supported-by theframe I. The positions of the ,slots 2|, shaft 22, and the ejector 9 aresuch thatwhen the foot ll of the ejector!) is disposed in the recess l3,shown particularly in full lines in "Fig. 3, the shaft 22 bears againstthe upper vends of theslots .2! in the ea s 1 2 .1 y One end oftheshaft-.22 extends through one of the upright brackets with which theframe -I is provided and projects over one side of the frame l.Theprojecting end of theshaft 22 is provided witha sheave or drum 25,which has a cable 26, shownparticularly in Fig. v1, wrapped therearoundand anchored thereto. When tensionis applied tothe; cable 28, the shaft22 is rotated in a counterclockwise direction as viewed inFig.3. S c edtothe back plate In of theejector 9,

substantiallybpposite the shaft 22, as shown a particularly inlFig.3,115 a lug 21, and secured to the shaft 22,Jpreferably by recessing andwelding, is aprojectionfl..When the ejector S is in its full line'position,, asfshown in Fig. 3, the

projection 28 isimmediately below the mg "21'.

The back plate l0 and However, when the cable 26 is tensioned bysuitable drawing mechanism to be hereinafter described, the shaft 22 isrotated in a counterclock- 2! is to elevate the'ejector 9 to thedotted'line positiondisclosedin'Fig. 3. At this-positionof the ejector9, the bottoms of the slots 2| in the ears 29 are against the bottom ofthe shaft 22,'

the vertical movement being permitted by the. slots 2 I. Continuedrotation of the shaft 22urging the projector 28 against the lug 21.causes the ejector 9 to oscillate out of the baling chamber 2 throughthe full line position "as shown in Fig. 4 to the inclined positionshown in dotted" lines in Fig. 4.

The mechanism for tensioning the cable26 comprises a cable arm 33, shownparticularlyin Figs..1, and 6, secured to a rock shaft 34 by a 'key135rTherock shaft 34=is pivotally supported by hearing members316,:supported by a frame 31, carried iby theframe I as shownparticularly in Elga5- The shaft 134xextends' through the frame I andhas secureditothe extending portionthereof afollowerzarm 38,. -to; whichis pivotally secured afollower rollerj39h The cable arm-33 and thefollower 'arm 38 are disposed on the shaft 34 in thezrelativepositions,.shown particularly in Fig. 1. For rocking .the shaftz 34there is provided a cam '40 slidable incaguidewayfiil secured to thebottom "42' of the frame Lshown particularly in Fig.;5.. V s v r Thecam'40 is. reciprocatedbya rod 43 secured atone endlto. the platen 3 andat the otherend passing throughv a bore 44 vin a "block 45 securedtoioneiside of the .cam 4:0. Fixed 1713131181011243 oneitherside of theblock '45 are stops 46. The arrangement is such that the cam 49 is movedwhen one or the other of the stops 4.6. abuts against the block 45..Thespacing of the stops 461.:providesLa lost motion connection between:the rodl'43randthe cam 40.

The follower roller 39 isarranged to be movedinto and out of the path ofmovement-of the cam Ml'ibyantactuating lever 50 under the control of theoperator of the-baling press. The actuating lever fill is' -pivotedabout a-pin 51 supported by a bracket- 52 carried by'the frame -I. Thelower end of'the lever 5'fl'is provided-with spaced portions'flpextending on opposite sidesof the shaft 34." Disposedabout theshaft-'34 on opposite sides 1 of the portions 53, are collars 54'. Thusas the platens 3 and 5 are actuated to compress the scrap metal to forma bale 56 on the ejector 9.

The cover I is opened by moving it substantially horizontally andrearwardly in a manner which may be any known in the art, or asdescribed in the above identified copending application. The platen 5 ismoved sidewiseof the chamber 2 to its rearmost position and the platen 3is moved rearwardly. As the platen 3 moves rearwardly i to the cam 40.When the forward stop 46 abuts against the block 45, the cam 49 startsto move dollars 54 to axially shift the rock 'shaftl3'4. In

'wise direction, as. viewed in Fig. 1, a su'ffici'ent distance to makeit impossible for the follower roller 39 to move over the low end of thecam 40, therejisprovided, a stop 55', shown particularly in Figsfil and5, projecting from the housing. 131i, against. which the. cable arm '33abuts. v I

The. operation of the invention is as follows: Scrap metal to bebaled.is depositedinthe baling chamber 2.. The cover lis, then' :closedla'nd.the

it 'axially moves the rod 43 rearwardly, sliding the same through thebore 44 in the block 45 attached rearwardly. By this time the lever 59should have been actuated to place the follower roller 39 in the path ofmovement of the cam 49. As the cam 40 moves rearwardly the followerroller 39 .rolls up the inclined face 51 thereof to rock the rock shaft.34 in a clockwise direction as viewed in Fig. 1. This action swings thecable arm 33 in a clockwise direction as viewed in Fig. 1 to draw on thecable :25, and since the cable 26 is wrapped about the sheave or drum 25to .rotate the shaft 22, the rotationof the :shaft 22 causes theprojection 28 to bear against the lug 211 to first elevate the ejector:9 from'the recess 43 .in which the foot I l. thereof-is disposed andthen to swing the ejector '9 out :of the 'baling chamber .2 to theposition shown in .Fig. 4 to lift the bale 56 from the chamber 2 untilthe back. plate ID of theejector 9 is in the'rd'otted line positionshownin 4. .Inithi'spositionthe bale 56 slides from the ejector 9 either ontothe ground outside of.

k the baling press or'into some-container which may be provided ifdesired; f

Whenthe follower roller 39 reaches the apex of the cam 49 the-ejector 9is in its dotted line position, shown inFig. 4. As the cam 4i) continuesto move rearwardlythe follower roller '39 moves down the inclined face58 of the cam. 49, thus permitting the rocksh'aft 34 to rotate in acounterclockwise direction :as viewed in Fig. 1, and the cable arm 33 toswing in the same direction. This movement of the cable arm- 33 permitsthe weight of the ejector 9 to cause it to swing about the shaft -22- toreturn the ejector -9 to its position within the baling chamber 2 withits back plate '9 in the recess t2 and its foot H in the recess l3ready'for another baling action. The baling press at this pointin theoperation is ready to have scrap-metal to be baled again-(Ia posited inthe baling chamber'2; However, before the platen 3 ismoved forwardly" tocompress the scrap metal in the balingtchamber 2, the lever 50 should beswung in a clockwise direction as v iewed mere. 5to move the followerroller 39 from the nether the cam-49. Thusg-as the platen 3movesforwardly on its compressing stroke, the cam 44 is inoperative to affectthe-position-of the ejector 9. As the platen 3 moves forward-on it-ecompressing stroke, it-draws after ittherod- 4 3 which slides throughthe bore 44 in the -bl'ock45 untll the rear stop 46'engageswith-the-block 45-. "Then the cam 40 =is -moved"forwardlyinto-position to actuate the ejector 9 u'pon rearward movement of theplaten 3 asabove' described. Ihe lcst motion provided by thespace-betweenthe stops-l45 has the result of'providing only :thenecessary longitudinalmovement'of: the cam 40', notwithstanding thetotal movement of the'platen 3.

While the ejector has. been described asassociated with a particularformofbalinemess, it willbe understood that the ejector provideclbythepreseht invention, may; be employeddn associ'ation with any balingpress where the bale may be formed on theejector. Having thus describedour invention, what we desire to secure by Letters Patentand claim is:

1. In a baling press of the character described 2. In a baling press ofthe character'described having a frame provided with a' compressingchamber, said chamber having side walls and a bottom and mechanism'toform a bale or thelike therein, bale ejecting means in said chamber uponwhich the bale is formed, said bale ejecting means comprising a verticalmember adapted to bedisposed adjacent one side of said chamber, and afoot connected to said vertical member adapted to be disposed adjacentthe bottom of said chamher, a recess in the bottom of said chamber formm said shaft to bring said projection into en gagement with said lug,and'means associated with said means for supporting said ejecting meansfor permitting said ejector to be elevated, upon engagement of saidprojection with said lug, ,to lift said foot fror'nsaid recess and uponcontinued rotation of said shaft to swing said ejecting means from saidchamber, whereby abale formed on said ejecting means is lifted from saidchamber. i

5. In a baling press of the character described having a frame providedwith a compressing chamber having substantially vertical sidewalls and asubstantially horizontal bottom and mechanism to form a bale orthe liketherein, bale ejecting means in said chamber on which a bale is adaptedto be formed, comprising a plate rereceiving said foot, means supportingsaid eject ing means for oscillation about an axis outside ofsaidchamber, means to elevate said ejecting means to lift said foot fromsaid recess, and means to swing said ejecting means about said axis fromsaid chamber, whereby a bale formed on said ejecting means is liftedfrom said chamber. i 3. In a baling'press of thecharacter describedhaving a frame provided with a, compressing chamber, said chamber havingside walls and a bottom and mechanism to form abale or the like therein,bale ejecting means in said chamber upon which the bale is formed, saidbale ejecting means comprising a vertical member adapted to be disposedadjacent one side of said chamber, and a foot connected to said verticalmember adapted to be disposed adjacent the bottom of said chamber, ashaftsupported outside of said chamber, means for supporting saidejecting means for oscillation about the axis of saidshaft, saidejecting means having a portion thereof extending in contiguous relationto said shaft, a projection on said shaft, a lug on said portionof saidejecting means for' being engaged by said projection, and means forrotating said shaft to move said projection into operative engagementwith said lug to swing said ejecting means from said chamber,wherebyabale formed on said ejecting means is lifted from said chamber.

4. In a baling press of the character described having a frame providedwith a compressin chamber, said chamber having side walls and a bottomand mechanism to form a bale or the like therein, bale ejecting means insaid chamber Y upon which the bale is formed, said bale ejecting meanscomprising a vertical member adapted to be disposed adjacent one side ofsaid chamber, and a foot connected to said vertical member adapted to bedisposed adjacent the bottom of said chamber, a recess in the bottom ofsaid chamber for receiving said foot, a shaft supported outside of saidchamber, means for supporting said ejecting means for oscillation aboutthe axis of said shaft, a portion of said ejecting means extending intocontiguous relation with said shaft, a projection on said shaft; a lugon said portion of said ejecting means, means to roposed in one ofsaid'vertical walls, a, foot, plate secured to the lower end of saidfirst named plate at substantially right angles thereto and recessed insaid bottom, means to support said first named plate for oscillationabout an'aXis outside of said chamber, and means to slide said firstnamed plate substantially verticallyin-its recess to lift said footplate from itsrecess and then to swing said ejecting means from saidchamber, whereby a bale formed on said ejecting means is lifted fromsaid chamber, l j

6. In a baling press of the character described having a. frame providedwith a compressing chamber having substantially vertical side walls anda substantially horizontal bottom and mechanism to form a'bale orthelike therein, bale ejecting means in said chamber, on whicha bale isadapted to be formed, comprising a plate recessed in one of saidvertical wal1s, a foot plate secured to the lower end ofsaid first namedplate at substantially right angles thereto and recessed in said bottom,a shaft supported outside of said chamber, means to support said firstnamedplate for oscillation about. the axis ofsaid shaft, means to rotatesaid shaft, and means associated with i said shaft and said first namedplate operative upon rotation of said shaft to slide said first namedplate substantially vertically in its recess to lift said foot platefrom its recess and then to swingsaid ejecting means from said chamber,whereby a bale formed by said ejecting means is liftedfrom said chamber.l u

'7. In a, baling press of-the character described, a frame provided witha compressing chamber and mechanism including a platen to form a baletherein, bale ejecting means in said chamber on which a bale is formed,mechanism 'operatively connected to said platen to actuatesaid ejectingmeans to remove a bale from said chamber and to return saidejectingmeans ,to normal position in said compressing chamber, as saidplaten is withdrawn to starting position after a compressing stroke, andmeans to disconnectsaid operative connection during the compressingstroke of said platen.

8. In a baling press of the character described, having a frame providedwith a compressing chamber and mechanism including a platen to form abale therein, bale ejecting means in said chamber on which said bale isformed, a cam movable with said platen, a follower for said cam,mechanism operably connecting said follower to said ejecting means toactuate-said ejecting means, and meansto selectively move said pressingchamber as said platen iswithdrawn, and said means for moving saidfollower being operable to move said follower from the paths! movementof said cam during the compressing stroke of said platen.

9. In abaling press of the characterdescmbed having "a frame providedwith a compressing chamber and mechanism including a .baling platen toform a halo or the like therein, bale ejector means in said chamber uponwhich the bale is formed, means for actuating said ejector including acam, an actuating connection between said platen and said cam foractuating said-cam by said platen, a follower for said cam, an operativeconnection'between said follower and said ejector means foraotuatingsaid ejector means bar said follower, and means for selectivelymoving said follower into the path of said cam for actuation thereby,whereby a predetermine movement'of platenand said cam for actuating saidcam by said platen, means to swing said ejector means about saidaxisirom said chamber including a follower for said earn, an operativeconnection between said fol-lower and said ejector nieans for actuating:said ejector means by saidfollower, and .means' to selectively movesaid follower into and out of the path ofmovementof said cam, wherebyupon predetermined movement of said platen said cam is operative at willto swing said ejector means .from said baling chamber for liftingiromsaid chamber abale formed on said ejector means, said cam being shapedto move said ejector to eject .abale thereon and toresaid cam actuatessaid ejector, said cam being shaped to move said ejector to eject a balethereon and to return said ei-ectorinto said lbaling chamber in aposition to have a subsequent bale formed thereon, said cam beingarrangedso that both ejector'movements take place during the return ofthe platen from its toll forward compressing positionto its startingrearward position following the forming of a bale. s I

10 abaling press of the character described having a .frame providedwith a compressing chamber and mechanism to term a halo o-r tne liketherein, 'bal'e' efiector means in said chamber npo'nwhich the bale isformed, means for actu- 'ating said ejector including a cam, anoperative connection between said cam-and a partbf said mechanism foractuating said cam thereby, -a

rocker arm, a cam follower connected to :said

rocker' arm, mechanism providingan operative connection between saidrocker arm and said ejector-means for actuating said ejector means bysaid rocker arm, :and means toseledtivelyinov said cam tol lower intooperative relation with said cam for causingsaid'rocker arm to be rockedby said oam ito operate the parts actuating said.

ejector, said 0am being shaped to move said ejector to 'ejecta :bale(thereon and to return said ejector into said b'aling chamber in "aposition Ito have a subsequent bale: formed thereon and said cam beingarranged so that both ejector move-- vn'nant-s "take place during thereturnof the platen from its full :iorwardcompressing D'Qsition to=itsstarting :rearwardposition tol'lowinglthe forming of abode. V

1:1. In "abaling press of the character described 'having' a frameprovided with "a compressing chamber and mechanism including a platen"to move :the follower into :and out of the path of form a pale or thelike therem, bale ejector means in said chamber upon which said bale isformed, means supporting said ejector "means for oscillation about'anaxisoutside of said ohani- {69 her, :a cam, an operative connectionbetween said turn said ejector into said baling chamber in -a positionto have a subsequent bale formed thereon and said cam being arranged sothat both ejector, movements take place during the return of the platenfrom its full forward compressing position to its starting rearwardposition vilollovving the forming of a bale.

.12. The invention as defined in claim 11 wherein there is a lost motionconnection between said platen and -:sa-id-cam whereby there is provideda movement of said cam by said platen during only-a predetermined partof the movement of sa-idplaten.

fl3.- In a baling. press of the character described having 1'91 frameprovided with a compressing chamber and mechanism including a platen toform *a bale or the like :therein, bale ejector means in said. chamberupon which said bale is formed, .means supporting said ejector means foroscillation abolit anaxis outside of said chamber, a cam, an operativeconnection between said platen and-said cam for actuating said cam bysaid platen, means to swing said ejector means about saidaxis' from saidchamber including a rock shaft, a follower :arm connected to said rock:shaft, a follower on :said follower arm for operative engagement with:said cam, :a second arm .on said rock shaft, and an operativeconneo'tion :betweenisaidzsecond arm and said ejector .means, whereby:upon a predetermined movement of said platen, said cam is operative torock said rock shaft to swing isai'd ejector means fromcsaid ibalingohamb'er for lifting from said chamber :a bale formed eon "said ejectormeans.

:14. Hlhe inventionaasdefinedzinclaim 13 whereinthe mock shaft is.axially 'slidahle at will to movement 10f the :cam, whereby upon apredetermin'ed movement of said platen, said cam is operative at will toswing asaid ejector means from :said baling chamber and for lifting fromsaid "chamber :a bale formed on :said ejector means.

\GEQRGE LANGFORD.

ALFORD 1C. BA-RROWS. JOHN V. HAIDLER.

